Spray nozzle



July 4, 1933; c. c. ARMSTRONG SPRAY NOZZLE Filed July 30, 1932 Patented .luly 4, 1933 Ullll'llE-l) STATES reien PATENT OFFCE'.

CHARLES o. ARMSTRONG, or essere, riminors, Assienon To L. Nntson MANUFAC- TUBING o0., rnc., or runnin, itmnois, A oonronerion or ILLINOIS SPRAY NGZZLE Application filed July 80,

This invention has reference to sprinkler nozzles and particularly that type ot nozzle having a terminal Wall provided with many perfor'ations, and used for spraying purposes.

My present invention is applicable to either a nozzle of the Wide, flat, flared form for producing a Wide and flat or tan-like spray, or one of the rose type of ordinary round form.

An object of my invention is to provide a nev'v and novel arrangement for breaking up and delivering water into the pressure 'chamber of the nozzle through the' use oi separate streams or jets whereby Water streams leav- .ing the periorations of the nozzle will all have equal force, producing an even spray.

Also, an object lies in providing a perfo-V rated Wall or diaphragm Within the waterreceiving neck of the nozzle so constructed and arranged that Water passing therethrough Will b'e evenly distributed Within the nozzlehead resulting in a better and more even spread of streams at the nozzlels perforati'ons.

Another object is to locate a Wall or dia- 'h'radm Within the neck oii the nozzle )roviding passages therein in such relation as to producedivergent streams or jets of Water for delivery into the nozzles pressure chamber.

ln the drawing, Figure l is an elevation of one force of nozzle as seen edgeivise, my invention being' shown incorporated therewith. Figure 2 is a side elevation of the same type of nozzle, parts being shown in section to better illustrate the invention. Figure 3 shows the top or end of a round or rose7 type of sprinkler, with my invention incorporated therewith. Figures 4 and 5 are enlarged longitudinal sections of part of a nozzles neck showing a diaphragm of a flat form, in one instance, and a curved diaphragm in the other instance both showing passages extending therethrough according to my invention, and Figure 6 is a transverse section of the neck showing the diaphragm and its pas-- sages.

TWhen a solid uninterrupted bulk of Water flows directly through the neck of a nozzle toward the perforations of the head a peculiar result is set up. lt Would naturally be 1932. Serial No. 626,944.

supposed that all of the perforations of the head would discharge streams of like volume and pressure. Again, it might be supposed that if any difference existed in the streams those immediately in line with the bore of the neck would seem to be those that Would discharge' the strongest streams. As a matter of fact, neither of these supposed actions is true. The streams found to have the lgreatest pressure are those that lie along the marginal portions of the head, Weak streams resulting at the middle or central portion thereof.

While varioi'is Ways of remedying this have been tried none of them has produced the desired even flow of Water from all oi the perlorations. However, l have found that by introducing a diaphragm in the neck of the nozzley iny which passages are provided for initially breaking up the bulk of Water into jets or strean's to be projected into the pressure chamber the desired result is realized, all ci the streams' leaving the nozzle having the vsame volume and velocity.

rlhe types of nozzle to which the invention is applicable may be such as are shown in the drawing. In Figures l and 2 the body, which may be a casting, has opposite dat Walls l flared in fan-like form, a neck portion being denoted at f2. These Walls may lie substan tially parallel to each other `and may be connected by narrow Walls 3. rlhus constructed the nozzle has a rectangular pressure chamber closed by a perforated Wall a, the perforations being identified at 5. The other form, Figure 3, may be of a round type, its discharge end ii'icluding a Wall e having periorations 5', While a' neck is shown in part section at 2. The Walls in either Jform are gradually brought down to create the narronT neck which terminates in an Iinternally threaded enlargement 6, Figure 2, adapted to receive a hose connection 7. And in this connection it may be said that all structures herein described are taken to be identical in ures 2 and 3 as to all portions having to do with the said neck.

The invention herein is directed to a Wall or diaphragm designated at 8, lin Figures 2, l, 5, and 6, and at 8 in Figure 3. This member lies Within the neck and may be cast with the body of the nozzle, or it may be separate therefrom secured in the position desired in any suitable manner. lt may be of any thickness, also, but as shown herein it may. be about the thickness of the walls of said neck and may be located anywhere within the straight bore of the same. It is provided with a series of passages 9, 9, Figures 2 and 3 respectively, and while it is unnecessary to describe the manner of creating said passages, it may be said that a method is employed by which they can be produced readily in a very simple manner, and at one operation. When cast in position the diaphragm lis produced in flat form as best shown in Figure 4f, together with said passages, the axes of which are parallel. By placing the diaphragm between a pair of dies l0, ll its flat form may be changed to a sphericall;T curved or domed one. lVhile the projected streams may be parallel to each other by using a flat diaphragm, it is preferable, for the best results, to have them divergent by spherically curving said diaphragm to thus change the positions of the r passages with respect to each other or so that their axes are divergently arranged. And while all of the streams may not be directed toward the perforated wall 4, a of the sprinkler, the combined streams will act to cause the desired uniform discharge of water at the perforations 5, 5.

' The die l0 has a cavity l0 therein whose wall is spherically curved, and the die 1l has an outwardly rounded surface 1l of substantially the same curvature. Pressure applied to the dies with the diaphragm between them results inthe char ged form in the latter.

The resultant divergent passages causes they water streams to be directed outwardly Iin all directions and therefore more evenly distributed through the pressure chamber with the result that full water streams, all of like pressure and volume, issue from the perforations 5, 5. The water in the filled pressure chamber is placed under extreme agitation with even pressure throughout, due to the many needle streams.

Different ways of producing divergent passages in a diaphragm may be possible whether said diaphragm is flat or arched, I having described and shown, as an example only, one manner by which after the perforations are created they may be forced into divergent positions.

I claim:

l. The combination with a sprinklernozzle comprising a sprinkler head forming a pressure chamber and having discharge yperforations, said head including a restricted neck arranged for attachment to a hose, of a diaphragm fixed within the neck provided with passages for dividing -into separate streams the water entering said neck and for projecting said streams into said pressure chamber.

2. A sprinkler nozzle comprising a sprinhose, and a diaphragm in said neck having passages extending through it whose ailes are divergent.

il. A sprinkled nozzle comprising a sprinkler head forming a water pressure chamber terminating in a wall provided with discharge perforations, said head having a neck for attachment to a hose, and a diaphragm closing the bore of said neck, the same having passages therein whose axes diverge therefrom in the direction of said wall for directing divergent water streams into said pressure chamber.

5. A sprinkler nozzle comprising a sprinkler head forming a water pressure chamber terminating in a wall having pcrforations, said head having a neck for attachmentto a hose, and a diaphragm closing the bore of the neck between said wall and the place of connection of the hose, said diaphragm being spherically ycurved in the direction of said perforated wall and having passages for' directling divergent water streams toward said wa 6. A sprinkler nozzle comprising a castl sprinkler head forming a water pressure chamber including a neck for attachment to a hose, and provided with a wall having perforations, and a diaphragm integral with said neck closing the same, said diaphragm having a series of passages arranged for di'- recting divergent water streams into said head.V

7. A sprinkler nozzle comprising a cast sprinkler head forming a water pressure chamber provided with a wall having perforations, and including a neck for attachment to a hose, and a diaphragm integral with said neck closing the bore thereof between the place of hose connection and the perforated wall, said diaphragm being domed in the direction of the said perforated wall and having a series of divergent passages for directing divergent water streams toward said wall.

.8. A sprinkler nozzle comprising a sprinkler head having a water inlet portion for attachment to a hose, and including a wall lying opposite the said water inlet portion, said wall being provided with discharge perforations, the whole constituting a pressure chamber, and a diaphragm disposed between the inlet portion and the said walls separating the cavity of the head into two compartments, said diaphragm having a series of passages extending therethrough radiating with reneck provided with discharge perforations, and a diaphragm within the bore having passages extending therethrough radially with respect to the axis of the bore and directed toward said sprinkler-head for projecting divergent Water streams toward said Wall.

In testimony whereof I affix my signature.

CHARLES C. ARMSTRONG. 

